DV

SEC source: 0001209191-24-004917 · doc4.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,857

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001209191-24-004917 · doc4.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 68,794

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 2,489 restricted stock units on March 15, 2024.

SEC source: 0001209191-24-004917 · doc4.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 69,798

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · derivative · entry 15

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,757

Underlying: Common Stock · 2,384 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F13 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F7 · derivative.exercise_date: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F7 · derivative.expiration_date: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · derivative · entry 14

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,500

Underlying: Common Stock · 2,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F13 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F4 · derivative.expiration_date: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · derivative · entry 13

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,451

Underlying: Common Stock · 1,493 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F13 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 8

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,725

F8 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 2,384 RSUs on March 15, 2024.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 7

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,519

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · price: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 6

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,135

F6 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 2,500 RSUs on March 15, 2024.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 5

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,968

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 4

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,468

F5 · kind: Represents shares withheld to satisfy tax obligations in connection with the settlement of 10,000 RSUs on March 15, 2024.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,564

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: As reported previously, the reporting person made an election under the Issuer's deferred compensation plan to defer delivery of the first four tranches of vested shares until March 2024 or, if sooner, as soon as administratively feasible following his separation from service with the Issuer.

F4 · price: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 63,564

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,493 RSUs on March 15, 2024.

SEC source: 0001209191-24-004919 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,062

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0001209191-24-004920 · doc4.xml · derivative · entry 7

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,025

Underlying: Common Stock · 7,802 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F3 · derivative.expiration_date: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001209191-24-004920 · doc4.xml · derivative · entry 6

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,125

Underlying: Common Stock · 9,375 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · shares: As reported previously, vested shares will be delivered to the reporting person as soon as administratively feasible following his separation from service with the Issuer.

F7 · derivative.exercise_date: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F7 · derivative.expiration_date: The restricted stock units were granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F6 · derivative.underlying_shares: As reported previously, vested shares will be delivered to the reporting person as soon as administratively feasible following his separation from service with the Issuer.

SEC source: 0001209191-24-004920 · doc4.xml · derivative · entry 5

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,297

Underlying: Common Stock · 6,471 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0001209191-24-004920 · doc4.xml · nonDerivative · entry 4

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 377,949

F4 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 7,802 RSUs on March 15, 2024.

SEC source: 0001209191-24-004920 · doc4.xml · nonDerivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 381,369

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: The restricted stock units were granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001209191-24-004920 · doc4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 373,567

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 6,471 RSUs on March 15, 2024.

SEC source: 0001209191-24-004920 · doc4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,175

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0001209191-24-004648 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 137,668

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-003800 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 138,568

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-003802 · doc4.xml · derivative · entry 1

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,841

Underlying: Common Stock · 4,841 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: Represents time-based restricted stock units granted on February 20, 2024 pursuant to DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on February 20, 2025, subject to Mr. Swidler's continued service.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on February 20, 2024 pursuant to DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on February 20, 2025, subject to Mr. Swidler's continued service.

SEC source: 0001209191-24-003506 · doc4.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,930

Underlying: Common Stock · 1,983 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: RSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

SEC source: 0001209191-24-003506 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,569

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,983 RSUs on February 15, 2024.

SEC source: 0001209191-24-003506 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,335

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

SEC source: 0001209191-24-002990 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 139,468

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-002409 · doc4.xml · derivative · entry 3

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,288

Underlying: Common Stock · 12,322 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: RSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

SEC source: 0001209191-24-002409 · doc4.xml · nonDerivative · entry 2

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,368

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 12,322 RSUs on January 26, 2024.

SEC source: 0001209191-24-002409 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 143,958

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

SEC source: 0001209191-24-001830 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 131,636

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-000738 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 132,536

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-000334 · doc4.xml · derivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,249

Underlying: Common Stock · 10,416 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

SEC source: 0001209191-24-000334 · doc4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 369,704

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 10,416 RSUs on December 31, 2023.

SEC source: 0001209191-24-000334 · doc4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,465

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

SEC source: 0001209191-23-059984 · doc4.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 390,200

Underlying: Common Stock · 9,225 shares

Expires 2028-01-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0001209191-23-059984 · doc4.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,309

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 23, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $37.365 to $37.69, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-23-059984 · doc4.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 76,534

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-059984 · doc4.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 399,425

Underlying: Common Stock · 9,231 shares

Expires 2028-01-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0001209191-23-059984 · doc4.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,309

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 23, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $37.34 to $37.60 inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-23-059984 · doc4.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 76,540

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-23-059887 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 133,436

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 31, 2022, as amended on March 23, 2023.

SEC source: 0001209191-23-059886 · doc4.xml · derivative · entry 3

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 123,539

Underlying: Common Stock · 11,002 shares

Expires 2027-09-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · shares: Represents non-qualified stock options granted on September 20, 2017 that vested on November 22, 2021 upon Providence VII U.S. Holdings L.P. receiving cumulative cash proceeds in respect of its investment in the Issuer equal to two times its aggregate cash investment in the Issuer.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-23-059886 · doc4.xml · nonDerivative · entry 2

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 132,197

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 30, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $37.188 to $37.52, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-23-059886 · doc4.xml · nonDerivative · entry 1

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 143,199

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-23-059451 · doc4.xml · derivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,544

Underlying: Common Stock · 48,544 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F2 · derivative.expiration_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-23-059452 · doc4.xml · derivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,544

Underlying: Common Stock · 48,544 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F2 · derivative.expiration_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-23-059453 · doc4.xml · derivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,141

Underlying: Common Stock · 38,141 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F2 · derivative.expiration_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-23-059455 · doc4.xml · derivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 124,827

Underlying: Common Stock · 124,827 shares

Expires not disclosed

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F3 · derivative.expiration_date: The restricted stock units vest 6.25% on March 15, 2024 (the "Vesting Date") and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.